The textbook "Liquid-Phase Reaction Rate Constants" offers a comprehensive analysis of advancements in chemical kinetics, particularly in the area of mechanisms of complex chemical reactions and free radicals. Over the past 25 years, significant developments have been made in the quantitative study of elementary chemical reactions, with thousands of reaction rate constants measured for a variety of chemical reactions. Given the vast amount of literature in this field, it is becoming increasingly challenging for chemists to navigate the available data. This book aims to systematize and present the collected data to optimize the use of existing information and enhance efficiency in research. It specifically addresses homolytic reactions in the liquid phase and provides valuable data on unimolecular, bimolecular, and trimolecular reactions that lead to the formation of free radicals.